
import 'package:dio/dio.dart';
class NetworkService {
  final _dio = Dio();

  NetworkService() {
    // 配置基础地址
    _dio.options.baseUrl = 'https://live-api.itheima.net';
    // 设置连接超时时间
    _dio.options.connectTimeout = const Duration(seconds: 5);
    // 设置接收超时时间
    _dio.options.receiveTimeout = const Duration(seconds: 5);
    // 设置请求头
    _dio.options.headers = {'Content-Type': 'application/json'};
    // 添加请求和响应拦截器
    // _addInterceptors();
  }
  // 发起Get请求
    Future<dynamic> get(String url, {Map<String, dynamic>? params}) async {
    try {
      final response = await _dio.get(url, queryParameters: params);
      return handleResponse(response);
    } catch (e) {
      return handleError(e);
    }
  }
    // 发起post请求
  Future<dynamic> post(String url, dynamic data) async {
    try {
      final response = await _dio.post(url, data: data);
      return handleResponse(response);
    } catch (e) {
      return handleError(e);
    }
  }
  // 其他封装Http方法
  dynamic handleResponse(Response response) {
    if (response.statusCode! >= 200 && response.statusCode! < 300) {
      return response.data;
    } else {
      throw Exception('请求失败，状态码：${response.statusCode}');
    }
  }
  dynamic handleError(error) {
    if (error is DioException) {
      if (error.type == DioExceptionType.connectionTimeout ||
          error.type == DioExceptionType.receiveTimeout) {
        throw Exception('网络连接超时');
      } else if (error.type == DioExceptionType.badResponse) {
        throw Exception('响应错误，状态码：${error.response?.statusCode}');
      } else {
        throw Exception('网络请求错误：$error');
      }
    } else {
      throw Exception('未知错误：$error');
    }
  }
}
// 导出
final http = NetworkService();
